Jurchen (in Chinese: Nüzhen (女真 in pinyin: nü3 zhen1)) refers to an ethnic group in Manchuria and northern Korea, and their language, writing system. The Jurchen later became the Manchus.
... whose natives made contact with the Manchu Empire until the 19th century, became known to Europeans from the travels of Martin Gerritz de Vries[?] in the 17th ...